[x64] Emit vmovss when AVX is enabled.

test/cctest/test-assembler-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1260 matching lines @@
   if (!CpuFeatures::IsSupported(AVX)) return;
 
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   v8::internal::byte buffer[1024];
   Assembler assm(isolate, buffer, sizeof(buffer));
   {
     CpuFeatureScope avx_scope(&assm, AVX);
     Label exit;
     // arguments in xmm0, xmm1 and xmm2
+    __ subq(rsp, Immediate(kDoubleSize * 2));  // For memory operand
+
+    __ movl(rdx, Immediate(0xc2f64000));  // -123.125
+    __ vmovd(xmm4, rdx);
+    __ vmovss(Operand(rsp, 0), xmm4);
+    __ vmovss(xmm5, Operand(rsp, 0));
+    __ vmovd(rcx, xmm5);
+    __ cmpl(rcx, rdx);
+    __ movl(rax, Immediate(9));
+    __ j(not_equal, &exit);
+
     __ movl(rax, Immediate(0));
-
     __ vmaxss(xmm3, xmm0, xmm1);
     __ vucomiss(xmm3, xmm1);
     __ j(parity_even, &exit);
     __ j(not_equal, &exit);
     __ movl(rax, Immediate(1));
 
     __ vminss(xmm3, xmm1, xmm2);
     __ vucomiss(xmm3, xmm1);
     __ j(parity_even, &exit);
     __ j(not_equal, &exit);
@@ skipping 20 matching lines @@
     __ vdivss(xmm3, xmm0, xmm1);
     __ vmulss(xmm3, xmm3, xmm2);
     __ vmulss(xmm3, xmm3, xmm1);
     __ vucomiss(xmm3, xmm2);
     __ j(parity_even, &exit);
     __ j(not_equal, &exit);
     __ movl(rax, Immediate(6));
 
     // result in eax
     __ bind(&exit);
+    __ addq(rsp, Immediate(kDoubleSize * 2));
     __ ret(0);
   }
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 #ifdef OBJECT_PRINT
   OFStream os(stdout);
   code->Print(os);
@@ skipping 27 matching lines @@
     __ vmovsd(xmm6, xmm5);
     __ vmovapd(xmm3, xmm6);
 
     // Test vcvtss2sd & vcvtsd2ss
     __ movl(rax, Immediate(9));
     __ movq(rdx, V8_INT64_C(0x426D1A0000000000));
     __ movq(Operand(rsp, 0), rdx);
     __ vcvtsd2ss(xmm6, xmm6, Operand(rsp, 0));
     __ vcvtss2sd(xmm7, xmm6, xmm6);
     __ vcvtsd2ss(xmm8, xmm7, xmm7);
-    __ movss(Operand(rsp, 0), xmm8);
+    __ vmovss(Operand(rsp, 0), xmm8);
     __ vcvtss2sd(xmm9, xmm8, Operand(rsp, 0));
     __ vmovq(rcx, xmm9);
     __ cmpq(rcx, rdx);
     __ j(not_equal, &exit);
 
     // Test vcvttsd2si
     __ movl(rax, Immediate(10));
     __ movl(rdx, Immediate(123));
     __ vcvtlsi2sd(xmm6, xmm6, rdx);
     __ vcvttsd2si(rcx, xmm6);
@@ skipping 760 matching lines @@
 
   F1 f = FUNCTION_CAST<F1>(code->entry());
   for (int i = 0; i < kNumCases; ++i) {
     int res = f(i);
     PrintF("f(%d) = %d\n", i, res);
     CHECK_EQ(values[i], res);
   }
 }
 
 #undef __